JP6122623B6 - Damper clutch hydraulic control system and method - Google Patents

Description

  The present invention relates to a damper clutch hydraulic control system and a damper clutch hydraulic control method.

  Generally, in an automatic transmission applied to an automobile, a transmission control device controls a plurality of solenoid valves to control the hydraulic pressure according to the traveling speed of the automobile, the opening rate of the throttle valve, and various detection conditions. Thus, the transmission of the transmission gear to the target shift stage is automatically performed. The automatic transmission has a torque converter in the middle between the engine and the transmission, and a damper clutch inside the torque converter. The damper clutch can be controlled to slip, open, or lock up according to the control of the hydraulic pressure.

  Conventionally, the hydraulic pressure is set to control the damper clutch in accordance with the shift condition, and the vehicle is actually run and tested to determine whether the control is performed as intended. If this test determines that the hydraulic pressure is applied to the damper clutch and the damper clutch is not being controlled as intended, the hydraulic pressure setting is adjusted downward, and conversely, the hydraulic pressure is determined to be lower Adjust the oil pressure setting upward. The conventional technique continuously repeats this process to adjust the hydraulic pressure so that the damper clutch is controlled as desired under the speed change condition.

  In this way, the method of setting the hydraulic pressure of the damper clutch by actually repeating the test has to carry out the hydraulic pressure setting work for each of various gear shifting conditions, so there is a problem that a lot of time and cost are invested. is there. Even if the hydraulic pressure is set by a conventional method, the reliability of control is not so high because the relationship between the hydraulic pressure actually discharged and the control duty is not linear. In addition, every time there is a change in the control logic (logic) or hardware of the automatic transmission control system (TMS), the work of setting the hydraulic pressure of the damper clutch must be performed again from the beginning to the end. There was also the problem of adding time and money.

JP 2005-98446 A

  The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to reduce the time and cost for controlling the damper clutch, and at the same time, to improve the reliability of the control. It is an object of the present invention to provide a damper clutch hydraulic control system and method capable of achieving the above.

  A damper clutch hydraulic control method according to the present invention includes a step of determining a hydraulic control mode of a damper clutch according to a traveling condition of the vehicle and a state of the damper clutch, a step of determining a hydraulic control value according to the hydraulic control mode, Determining a target waveform of the engine rotational speed and a target waveform of the turbine rotational speed in accordance with the hydraulic control mode; detecting a waveform of the engine rotational speed and a waveform of the turbine rotational speed in the hydraulic control mode; Determining whether the detected engine rotational speed waveform and the turbine rotational speed waveform in the control mode match the engine rotational speed target waveform and the turbine rotational speed target waveform, respectively; and The engine rotational speed waveform and the turbine rotational speed waveform obtained are Rolling to sign the target waveform and the target waveform of the turbine rotation speed of the speed, characterized in that it is configured to include, and adjusting the hydraulic pressure control value.

  The step of adjusting the hydraulic pressure control value is such that a deviation between the detected engine rotational speed waveform and the turbine rotational speed waveform is between the engine rotational speed target waveform and the turbine rotational speed target waveform. When the deviation is larger than the deviation, the hydraulic pressure control value is adjusted upward.

  The step of adjusting the hydraulic pressure control value is such that a deviation between the detected engine rotational speed waveform and the turbine rotational speed waveform is between the engine rotational speed target waveform and the turbine rotational speed target waveform. When the deviation is smaller than the above, the hydraulic pressure control value is adjusted downward.

  When the detected engine rotation speed and turbine rotation speed waveforms match the target waveform, the method may further include performing hydraulic control using the hydraulic control value.

  The hydraulic control value is calculated from a hydraulic control logic (logic) set in advance for each hydraulic control mode.

  The damper clutch hydraulic control system according to the present invention is necessary for transmission control including an engine data detection unit for detecting information necessary for engine control including engine rotation speed, turbine rotation speed, and vehicle speed information, and a state of a damper clutch. A shift data detecting unit for detecting the correct information, a control unit for controlling the hydraulic pressure of the damper clutch based on the data transmitted from the engine data detecting unit and the shift data detecting unit, and the control unit includes: The hydraulic pressure of the damper clutch is controlled using the damper clutch hydraulic pressure control method according to any one of Items 1 to 4.

  The control unit may include an automatic transmission control system (TMS).

  The apparatus may further include a hydraulic pressure adjustment unit that receives a control signal from the control unit and adjusts the hydraulic pressure of the damper clutch.

  The hydraulic pressure adjusting unit may be a solenoid valve.

  According to the present invention, the target waveform of the rotational speed of the engine and the turbine is determined for each control mode, and the hydraulic pressure of the damper clutch is controlled so as to follow the target waveform. Therefore, the hydraulic pressure of the damper clutch is controlled quickly and accurately. Can do. This has the effect of reducing the time and cost required for setting the hydraulic control value. In addition, according to the present invention, even when there is a change in the control logic or hardware of the automatic transmission control system, it is not necessary to separately perform the damper clutch hydraulic pressure setting work, so that the convenience of work increases. There is.

1 is a block diagram of a damper clutch hydraulic control system according to the present invention. FIG. 3 is a flowchart of a damper clutch hydraulic control method according to the present invention. It is the schematic of the damper clutch hydraulic control method by this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram of a damper clutch hydraulic control system 10 of the present invention. As shown in FIG. 1, the damper clutch hydraulic control system 10 can include an engine data detection unit 100, a shift data detection unit 200, a control unit 300, and a hydraulic pressure adjustment unit 400. The engine data detection unit 100 detects all information necessary for vehicle and engine control, such as vehicle speed, crank angle, engine rotation speed, turbine rotation speed, cooling water temperature, throttle valve opening amount, and the like. In one or more embodiments, the engine data detection unit 100 may include various sensors such as a vehicle speed sensor, a crank sensor, an engine rotation speed sensor, a turbine rotation speed sensor, a cooling water temperature sensor, and a throttle opening amount sensor. Information such as vehicle speed, crank angle, engine rotation speed, turbine rotation speed, cooling water temperature, throttle valve opening amount, and the like can be detected using these sensors.

  The shift data detection unit 200 detects all information necessary for shift control, such as oil temperature, input / output shaft rotation speed, damper clutch state information, and the like. In one or more embodiments, the shift data detection unit 200 may include an oil temperature sensor, an input / output shaft speed sensor, a damper clutch sensor, and the like. The oil temperature, input / output shaft rotation speed, and damper clutch state information can be detected using a sensor.

  The control unit 300 controls the hydraulic pressure of the damper clutch 500 based on the engine rotation speed, the turbine rotation speed, the vehicle running condition, the damper clutch state information, etc. transmitted from the engine data detection unit 100 and the shift data detection unit 200. To do. The control unit 300 can be realized by one or more processors that operate according to a set program, and the set program is programmed to perform each step of the damper clutch hydraulic control method according to the embodiment of the present invention. The In one or more embodiments, the controller 300 is an automatic transmission control system (TMS). An automatic transmission control system (TMS) is a system that performs an optimal shift according to a control command programmed based on shift information in order to control an automatic transmission of an automobile.

  The hydraulic pressure adjustment unit 400 is connected to the damper clutch 500, receives a hydraulic pressure control signal from the control unit 300, and adjusts the hydraulic pressure of the damper clutch 500. In one or a plurality of embodiments, the hydraulic pressure adjusting unit 400 may be an electromagnetically operated actuator or a solenoid valve.

  Hereinafter, the damper clutch hydraulic pressure control method will be specifically described. FIG. 2 is a flowchart of the damper clutch hydraulic pressure control method of the present invention. FIG. 3 is a schematic diagram of the damper clutch hydraulic pressure control method of the present invention. As shown in FIG. 2 and FIG. 3, first, the control unit 300 receives the vehicle running conditions transmitted from the engine data detection unit 100 and the damper clutch state information transmitted from the shift data detection unit 200, and the damper clutch A control mode is determined (S10). The vehicle traveling condition means state information in which the vehicle is currently traveling, such as whether the vehicle is in a constant speed traveling state, an acceleration state, or a deceleration state.

  The damper clutch state information means information indicating whether the damper clutch is in a lock-up state, an open state, or a slip state. The slip state is divided into various states depending on the degree of slip of the damper clutch. The damper clutch control mode means a damper clutch control method and control type. The control mode of the damper clutch can be set differently depending on the running condition of the vehicle and the state of the automatic transmission such as whether the automatic transmission is upshifted or downshifted. The control mode of the damper clutch can be set in advance on the program of the control unit 300 according to the state of the damper clutch, the running condition of the vehicle, and the like.

  The controller 300 determines the hydraulic pressure control value of the damper clutch according to the control mode determined in step S10 (S20). The hydraulic control value can be displayed as a value that changes with time, as shown in FIG. In one or a plurality of embodiments, the hydraulic control value can be calculated from hydraulic control logic stored in the control unit 300 in advance. Generally, in the automatic transmission control system (TMS) 300 of a vehicle, hydraulic control logic is preset and stored for each control mode. Therefore, the controller 300 can control the hydraulic pressure of the damper clutch 500 by calculating the hydraulic pressure control value using the hydraulic pressure control logic.

  Next, the control unit 300 determines a target waveform A1 of the engine rotation speed and a target waveform B1 of the turbine rotation speed in accordance with the hydraulic pressure control mode determined in step S10 (S30). The engine rotational speed target waveform indicates the engine rotational speed targeted by the control unit 300 for each control mode by time. As shown in FIG. 2, the engine rotational speed target waveform A1 can be displayed. . The turbine rotation speed target waveform indicates the turbine rotation speed targeted by the control unit 300 for each control mode by time. As shown in FIG. 2, the turbine rotation speed target waveform B1 can be displayed. . The target waveform A1 of the engine speed and the target waveform B1 of the turbine speed for each control mode are preset and stored on the program of the control unit 300.

  Next, the controller 300 detects the current waveform A2 of the engine rotation speed and the waveform B2 of the turbine rotation speed (S40). The engine rotation speed and the turbine rotation speed can be measured by the engine rotation speed sensor and the turbine rotation speed sensor of the engine data detection unit 100, respectively, and can be transmitted to the control unit 300 in real time. The control unit 300 receives the engine rotation speed and the turbine rotation speed information from the engine data detection unit 100, and aligns the engine rotation speed and the turbine rotation speed according to time, so that the engine rotation speed waveform A2 and the turbine rotation speed are aligned. Each of the waveforms B2 can be detected.

  Next, the controller 300 determines that the engine rotational speed waveform A2 and the turbine rotational speed waveform B2 detected in step S40 are the engine rotational speed target waveform A1 and the turbine rotational speed target waveform determined in step S30. It is determined whether or not it matches B1 (S50).

  The controller 300 is detected when it is determined that the engine and turbine rotation speed waveforms A2 and B2 detected in step S50 do not match the engine and turbine rotation speed target waveforms A1 and B1. The hydraulic pressure control value P1 is adjusted so that the engine rotational speed waveform A2 and the turbine rotational speed waveform B2 coincide with the engine rotational speed target waveform A1 and the turbine rotational speed target waveform B1 (S60).

  After adjusting the damper clutch hydraulic pressure using the hydraulic pressure adjusted in step S60, control unit 300 performs step S40 again. Therefore, the controller 300 re-detects the engine and turbine rotational speed waveforms A2 and B2 (S40), and again determines whether the engine and turbine rotational speed target waveforms A1 and B1 match (S50). If the detected waveforms A2 and B2 do not match the target waveforms A1 and B1, the hydraulic pressure control value is adjusted again. By repeating this process in the control unit 300, an appropriate hydraulic pressure control value can be quickly found, and the waveforms A2 and B2 of the engine and turbine rotational speeds can be quickly matched with the target waveforms A1 and B1.

  In one or more embodiments, in the case of CASE 1 in FIG. 2, the detected turbine rotation speed waveform B2 matches the turbine rotation speed target waveform B1, but the detected engine rotation speed waveform A2 is The engine rotational speed is larger than the target waveform A1.

  As shown in CASE1, the controller 300 determines that the deviation between the detected engine rotation speed waveform A2 and the turbine rotation speed waveform B2 is the engine rotation speed target waveform A1 and the turbine rotation speed target. When the deviation from the waveform B1 is larger, the hydraulic pressure control value can be adjusted upward from P1 to P2. In the case of CASE 1, this corresponds to a case where the slip ratio (engine rotation speed−turbine rotation speed) is larger than the target value. Therefore, the control unit 300 reduces the slip ratio of the damper clutch by adjusting the hydraulic control value upward to P 2. The detected waveforms A2 and B2 are matched with the target waveforms A1 and B1.

  On the other hand, in the case of CASE 2 in FIG. 2, the detected turbine rotation speed waveform B3 matches the turbine rotation speed target waveform B1, but the detected engine rotation speed waveform A3 is the engine rotation speed. Is smaller than the target waveform A1. As in CASE 2, the controller 300 determines that the deviation between the detected engine rotational speed waveform A2 and the turbine rotational speed waveform B2 is the difference between the engine rotational speed target waveform A1 and the turbine rotational speed target waveform B1. If the deviation is smaller than the difference, the hydraulic pressure control value can be adjusted downward from P1 to P3.

  In the case of CASE2, contrary to CASE1, this corresponds to the case where the slip ratio (engine speed-turbine speed) is smaller than the target value. Therefore, the slip ratio is increased by adjusting the hydraulic control value downward from P1 to P3. The detected waveforms A3 and B3 are matched with the target waveforms A1 and B1.

  When it is determined that the detected engine rotation speed and turbine rotation speed waveforms A2 and B2 match the target waveforms A1 and B1, the control unit 300 performs the hydraulic control using the hydraulic control values as they are. (S70). In one or more embodiments, the controller 300 may adjust the hydraulic pressure of the damper clutch 500 by transmitting a hydraulic pressure control signal and controlling the solenoid valve 400.

  According to such a damper clutch hydraulic control method, the target waveform of the engine and turbine rotational speed is determined for each hydraulic control mode, and this is compared with the detected target waveform of the engine and turbine. Since the hydraulic pressure of the damper clutch is adjusted so as to follow the target waveform, the hydraulic pressure of the damper clutch can be controlled quickly and accurately. Therefore, according to the present invention, the time and cost required for adjusting the hydraulic pressure of the damper clutch can be reduced.

  Even if there is a change in the control logic or hardware of the automatic transmission control system, controlling the damper clutch hydraulic pressure so that it follows the target waveform of the engine speed and turbine speed is the same. In addition, the convenience of setting the damper clutch hydraulic pressure is increased. As mentioned above, although preferable embodiment of this invention was described, it is not limited to this embodiment, A deformation | transformation and a change are possible.

DESCRIPTION OF SYMBOLS 10 Damper clutch hydraulic control system 100 Engine data detection part 200 Shift data detection part 300 Control part 400 Hydraulic pressure adjustment part 500 Damper clutch

Claims (9)

In the damper clutch hydraulic control method,
Determining a hydraulic control mode of the damper clutch in accordance with a running condition of the vehicle and a state of the damper clutch;
Determining a hydraulic control value according to the hydraulic control mode;
Determining a target waveform of the engine speed and a target waveform of the turbine speed in accordance with the hydraulic control mode;
Detecting a waveform of an engine rotation speed and a waveform of a turbine rotation speed in the hydraulic control mode;
Determining whether the detected engine rotational speed waveform and turbine rotational speed waveform in the hydraulic control mode match the engine rotational speed target waveform and the turbine rotational speed target waveform, respectively;
Adjusting the hydraulic pressure control value so that the detected engine rotational speed waveform and the turbine rotational speed waveform match the engine rotational speed target waveform and the turbine rotational speed target waveform, respectively. A damper clutch hydraulic control method comprising:   The step of adjusting the hydraulic pressure control value is such that a deviation between the detected engine rotational speed waveform and the turbine rotational speed waveform is between the engine rotational speed target waveform and the turbine rotational speed target waveform. 2. The damper clutch hydraulic control method according to claim 1, wherein the hydraulic pressure control value is adjusted upward when the deviation is larger than the deviation.   The step of adjusting the hydraulic pressure control value is such that a deviation between the detected engine rotational speed waveform and the turbine rotational speed waveform is between the engine rotational speed target waveform and the turbine rotational speed target waveform. 2. The damper clutch hydraulic control method according to claim 1, wherein the hydraulic pressure control value is adjusted downward when the deviation is smaller than.   2. The method according to claim 1, further comprising a step of performing hydraulic pressure control using the hydraulic pressure control value when the detected waveform of the engine rotational speed and the turbine rotational speed coincide with the target waveform. Damper clutch hydraulic control method.   2. The damper clutch hydraulic control method according to claim 1, wherein the hydraulic control value is calculated from a hydraulic control logic set in advance for each of the hydraulic control modes. In the damper clutch hydraulic control system,
An engine data detection unit that detects information necessary for engine control including engine rotation speed, turbine rotation speed, and vehicle speed information;
A shift data detector for detecting information necessary for transmission control including the state of the damper clutch;
A controller that controls oil pressure of the damper clutch based on data transmitted from the engine data detector and the shift data detector;
The damper clutch hydraulic control system, wherein the controller controls the hydraulic pressure of the damper clutch by the method according to any one of claims 1 to 4.   The damper clutch hydraulic control system according to claim 6, wherein the control unit includes an automatic transmission control system.   The damper clutch hydraulic control system according to claim 6, further comprising a hydraulic pressure adjustment unit that receives a control signal from the control unit and adjusts a hydraulic pressure of the damper clutch. 9. The damper clutch hydraulic control system according to claim 8 , wherein the hydraulic pressure adjusting unit is a solenoid valve.

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